@article{DAN_1965_160_4_a3,
     author = {M. G. Dzhavadov},
     title = {On $m$-tuple completeness of half the eigenfunctions and adjoint functions of an ordinary differential operator of order~$2m$},
     journal = {Doklady Akademii Nauk},
     pages = {754--757},
     publisher = {mathdoc},
     volume = {160},
     number = {4},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_160_4_a3/}
}